Domain Names


Worldwide Patent Annuity Services

Document Legalizations

California Notary Public

Marcas Comerciales


Derechos de Autor



Pago Anualidades Patentes, todo el Mundo

Legalización de Documentos

Notaria Publica fuera de USA

Document Legalizations

Proper and timely document legalization
is a must if you wish to avoid surcharges,
extensions of time to file documents and
the possibility of loosing your rights.  We
will handle your requests immediately
upon deciding where you wish to file a
patent or trademark application.


LegalizaCionES DE DocumentOS

La tramitación adecuada y puntual de
poderes, cesiones y documentos varios
es vital para mantener vigente vuestras
solicitudes y así no perder vuestros
derechos.  Nosotros le guiaremos en
lograr dicha tramitación en forma eficiente
para cada una de sus solicitudes de
marcas o patentes.

Patent Annuities

We can assist you in the calendaring and
payment of your patent annuities
throughout the world using software that
eliminates waste of time and eliminates
third party charges.


Pago de Anualidades para Patentes

El pago de anualidades para solicitudes y
cartas patentes alrededor del mundo es
una tarea compleja.  Contamos con un
programa que le brinda un calendario y
notificaciones para el pago de estas
anualidades, lo que le ahorra tiempo y
dinero, evitando cargos adicionales de
terceras entidades al manejarse



Sergio Chacon Hoffmann

International Consultant



Mr. Chacon Hoffmann attended the University of California in Los Angeles (UCLA) for his Bachelor in Political Science and commenced his professional duties as  part of Chilean Diplomatic Services.

He actively participated at the Chilean Consulate General at Los Angeles as Chancellor and Honorary Adjunct Consul as well as in Trade Commissions (as of 1976).  In the years to come Mr. Chacon Hoffmann specialized in Intellectual Property matters with studies in Europe and in the United States of America to gain expertise in both international and U.S. prosecution of patents, designs and trademarks. This expertise expanded to consulting on intellectual property services rendered through U. S. and foreign law firms for over twenty years.  

A key element of the consulting services
provided Et Seq’s client base, is the
necessary business strategy, international
legal and business contacts, inclusive of funding sources to ensure intellectual property protection becomes an asset rather than a financial drain.   

This no nonsense and integrated approach is unique and brings a viable business model to individuals, small and mid sized corporations that require expertise in more than just the prosecution of a patent or trademark, precisely where most legal services cease to act.


Antonio Villalobos Darrigrandi

Attorney at Law – Of Counsel



Mr. Villalobos Darrigrandi received his law degree from the University of Chile, School of Law, in 1966.  During his years of practice, he has specialized in civil and business law, providing legal services to small and mid size businesses in Chile for the Firm’s local and  international clients.  The practice areas with special mention have been real estate, fruit and food exports, settlement of warranty  insurance policies, formation of business enterprises in Chile, and representation of  Chilean nationals outside of the national  territory.   

Mr. Villalobos Darrigrandi has served in the capacity of General Counsel and Of Counsel to various entities, including Ugarte &  Larrain Real Estate Builders and Brokers (1966 -1976);  LB Ice Cream Factory (1980 -1995), El Esfuerzo Landholdings and Fruit Exports (2000), among others.   

During 2008 Mr. Villalobos Darrigrandi was instrumental in coordinating and assisting the participants of two key international groups interested in large size investments in real estate and tourism.   

 Mr. Villalobos Darrigrandi holds private practice in the capital city of Santiago, Chile with liaisons offices in different parts of the world to provide international services to its client base.  As the Managing Partner, Mr.Villalobos works close with all partipants to ensure every aspect of our client’s goals are met.



In the US:  (818) 824-5911, Fax: (818) 508.9604,

3727 West Magnolia Boulevard, Suite 429, Burbank, CA 91505, USA